Printing-frame.



G. E. WELTMER. PRINTING FRAME. APPLIOATIDI FILED APB. 26.1908. 91 7,696 Patented Apr. 6, 1909. 6 BHEBTS-SHEET 1,

2 Evin. j

G. E. WELTMER.

PRINTING` FRAME. APPLIOATION FILED APn.25,1soa.

91 7,696. Paten-bed Apr.4 6, 1909.

5 SHEETS-SHEET 2y u 36 W l lo 87 HTNESSES: ZJQVENTOR.

. ./d ATTORNEY.

C. E. WELTMER.

PRINTING FRAME.

AI'PLIUATIDN HLM 11.25.1908.

Patented Apr. 6, 1909.

t5 SHEETS-SHEET 3.

/'dATTOR/VEY.

WBLTMER.

TING FRAME.

N FILED APR.

Patented Apr. 6, 1909. 6 SHEETS-SHEET 4.

C. E. WBLTMER.

PRINTING FRAME.

APPLIuA'noB FILED APn.25.19o.

917,696. Patented Apr. was.

s sums-annif s.

e ((02 ZJIN VEN TOR.

BY 2m WM/ ATTORNEY.

j 'UNITED STATES PATENT OFFICE.

QYRUS E. WELTMER, OF NEVADA, MISSOURI.

PRINTING-FRAME.

Specification of Letters Patent.

Patented April 6, 1909.

Application led April 25, 1908. Serial No. 429,197.

To all who/1n 'it may concern:-

Be it known that I, CYR-Us E. WELTMER,

a citizen of the United States, residing at Netives ol which prints are to be made.

My 'invention provides further, a frame comprising iront and back members adapted to receive between them the negative plate or iilni,said members being releasably connected with each other by clamping means which permit the members to be moved apart without detachment from each` other so that the adjustment of the negative may Vreadily be obtained, said clamping means providing further, yielding `means by which the two frame members may be forced toward .each other so as to tightly clampthe negative.

My inventionl provides further, a frame comprising two members substantially rectangular in form, provided with clamping means located adjacent to the corners of the frame, whereby uncut films may have 'a Wide range oi" adjustabilitv in the frameJ such as cannot be obtaine by twoart frames which are otherwise connecte with each other.

Another object of my invention isto provide a construction having one or more masks adjustable transversely across the printing opening inthe frame and capable of pivotal movement relative to the frame whereby the. mask can be adjusted to correspond with the position ol' the picture on the `film or plate.

'My invention provides further, a shutter comprising two members which are hinged to cach other, one member being hinged to the frame, means being providedvby which both members are normally and inde endently swungl to the open position when t e shutter is released from the locking device iovided i'oi holding it in the closed position. j By means ol this construction great rapidity is aiiorded in thein'aking of duplicate prints'.

My invention provides still further, novel vmeans for( locking the shutter in the closed position and b which the shutter is held tightly clampe against the print when in the closed position.

My invention provides further, a shutter by which, when the shutter is released from the? locking device, it will automatically swing from the closed to the open position and in the latter position fully clear the opening in the frame so that the sensitive sheets may be rapidly inserted and withdrawn from said opening.

Novel means are employed for clamping in the frame the transparent glass plate which .is employed when printing from iilm negaftives. Y

VOther novel features of my invention are hereinafter more particularly described and claimed.

In the accompanyin drawings illustrative of my invention, for t e pur ose of convenience the printing frame will e described as being disposed in a horizontal position.

Figure 1 is a plan view looking at the upper side of the'front frame member. Fig. 2 is a vertical section taken on the dotted line ji-l1 of Fig. 7 and showing one of the corner clamping devices represented in solid liner, in the locked position and in dotted lines in the unlocked but not detachedposition. F ig'. 3 is a vertical sectional view taken on the dotted line c-d of Fig. 7. Fig. 4 is a view similar to Fig. 2, the clamping device being shown in the disconnected osition. Fig. 5 is an elevation of the clamping device shown in Fig. 2. Fig. 6 is an elevation of the hinge clampin mechanism shownin vertical section in ig. 11 and by which the front and back frame memb ers are slidabl)` and pivotally connected with each other.

Fig. 7 is abottoni view of the printing frame. Fig. Sisa central, longitudinal vertical sectional view of the printing frame having mounted thereon a tubular tilm holder. ln this view the shutter is shown' in solid lines in the .closed position hinged to the frame combined with means and. in dotted lines in the open position.

Fig. 9 is a top view of the back frame niember, portions of which are broken away, showing mounted thereon a plurality of masks and mask supports. Fig. l() is a perspective view of my improved printing frame, with the back member shown disposed above tlie front member. Fig. 1l is a vertical sectional view, taken on the dotted line e-f of Fig. 7. Fig. 12 is a vertical sec tional view taken on the dotted line g-h of Fig. 9 and showing one of the lmasks pivqted to 1ts support. Fig. 13 is a bottom view of one of the pivoted masks and its support. Fig. 14 is a vertical sectional view taken on the dotted line 'i-,-';i of, Fig. 9. Fig. 15 is a plan view of one of the masks Awhich is detachable from its support.. Fig. 16 is a plan view of one of the supports on which the de? tfrchable masks aremounted. Fig. 17 -is a i vertical section of aV 4portion of the back rameancl of the shutter, taken on a plane corresponding to the dotted line c--l of Fig. 7. In this view the shutter member. which is hinged t0 the .back frame, is shown locked in the closed position, the other shutter member being shown in the open position. Fig. 18 is a vertical section taken on the dotted line rit-n of Fi 17. Fig. 19 is a plan viewof the un der'si e of a portion of the top or front frame .connected with eachother', preferabl at the .50"

Aclamping devices, by Whic member having a transparent plate, a portion of which is shown, clamped thereto.

Fig.,20 is an elevation of what is shown in.

Fig. 19. 21'is a horizontal section taken `on the dotted line o-p of Fig. 11. Fig. 22

is a horizontal section taken y on 'the y dotted"v line g-r of Fig. 3. Fig. 23 is an enlarged delswung to the open position.

, Similar characters of '1 reference denote similar arts. 4f

1 an 2 denote thefront Vand back members of the rinting frame. .These members are prefere ly of substantially rectangular shape, and are provided'each with a rectangular opening 3 across' which isfajdapted to extend a negative p 'late or lm4, as shown in Figs.7and8.

The frame membersl and2 are detachab ly four.- corners of the frarile, by .re easable bers 1 and 2 may be force apart, as shown i'n dotted lines 'in-Fig. 2, o permit the adi justment of the ilm or 4,ne atxveplate to its a ofthe frame mayall be alike in construction gripper position betweenth 'frame members.

e clamping meansby which the't'wo frame members 1 and 2 may,*after the 'negative is properly ald-' justed, be Vforced' toward'each ot er and thereby clamp between them With a yieldingv pressure, the film or negative plate.l

'The frame clamping devices at the corners as shown in the modification in Figs. 24 an 25,01 these devices may be of different conthe frame mem-v devices ;eac 'further providestruction, as shown in other figures of the drawing.

f Inv the preferred form of my invention, such as is illustrated in Figs. 1 and 7, the front member 1 is provided at diagonally 'oppositeoorners with diagonal projections 5 and .6. The back memberiat corresponding corners is provided with similarly dis-` osed projections 7 and `8. The cornerpro- Jectio'n 5 of the front member 1 is hinged to the projection 7, and areleasable locking and clangnng device connects the projections 6 an .which may be swung towardand from the member 2 and isprovided adjacent its upper end with avhole 14 in which normally rests the outer end ol' a flat sprin .plate 15, the inner ond of which is securedV to the under vside of the back member 2, when said member is dis oscd in its operative position below the mem er 1, Aas shown in Fig. 8. The tension bf the s 4 ring l5 is such thatnormally its outer en bears upwardly against' the springplate 1,3, thereby exerting a pressure tending to force the membersnl and 2 toward eachother, or to the position shown in solid lines in Fig. 11. the plate 12 is provided with two vertical ears 16 between which is pivoted a horizontal lever 1'7 adapted to be swung to a position, as shown indotted lines in Fig. 11 in which it will force the spring 15 against the opposite side of the recessv or hole 14, thereby forcingftheplate 13. andleaiI of the hinge 10 in a directionsuchthat the members 1 and 2 will be forced a art, as shown in dotted lines in Fig. 11. en the lever 17 is swung to the position 'shown in' solid lines in Figs. 7 and 11 it will not bear on the spring 15 and said spring' will therefore exert apressure tending to force the members 1 and 2 toward each other as already described.

I will now describe the gclampin device, such as is disposed at each of the ot erthree corners of the rinting frame, and 'such as is portion of which is secured to the The horizontal portion of4 rovided at a four corners of the `modified orm of' and 25.` v

' To he outer orto side of the member 1 is secured one end .o a substantially right angledspring'plate 18 rovided at its free en with an outwardly turned hook 19 ada tedto 'receive therein a linkof recta u ar form, denoted by 20and best shown in igs. 2. 4'and 5. Thefllink 2 0'is pivoted to a recmy invention, shown in Figs. 24

'21 with the plate 22.

tangular lever 2 1, said lever being pivoted to the free end of a substantially right angled plate 22 of resilient material and which'atjts other end is secured to the outer orunder side of the back member 2. The spring plates 1 8 and 22 are adapted' to be drawn toward each other by the link and lever 21 to the'positionlshownfiii solid lines in Figs. 2 and 3, when the link 20 is engaged in 4tbe hook 19 of the plate 18 and the lever 21 is swung to theiclosed position shown in solidV In .this position the cause the link 20 to retain the lever in Ythe in the closed position shown in Figs. 2 and 3,

`locked position.

In order to more securely hold the lever 2 1 the plate 22 at its angle is provided withtwo outwardly extending roj ections 24 -havin concave inner sides a apted to receive an( hold'i-es ectively-two lateral shoulders 25 such that the link 20 must be forced into it provide at opposite edges of the lever 2 1 when said lever is swung to the closed position, shown. in Fig. 5. j

The hook .19 of the plate 18is of a width with considerable force when the link is made to enga e said hook. This construction is provi( Fig. 2,

` SW'llIlg,

- ever is swung toy the closed position, exert am e Vso that when`the.lever`21 is swung to the open position, shown in dotted lines in the link 20 is with the hook 19- When theV llever isV so the members 1 an d 2 will'be forced apart to the positions shown in dottedlines in Fig. 2, thereby permitting the adjustment between them ofthe negativeplate or film. Thus byswingingzthe leven- 21-130 theclosed and open positions the igeniers land 2 may be forced' towardnnd fromeanh other. The' lates 18 and 22 being resilient will, when the yielding/pressie/Iby which' the meii'ibers` 1 and 2 are clamped tothenegative plate when used, and tothe assaplatej26 and -ilin 4L4 .A j upon theV outer side of the member 2 at the at the inner when a iilm is emp oye When for any purpose" itl to de tach the members 1 and2 from eachother, this may be doneby swinging each lever21 to' the positionshown in dotted lines `in 2 and then forcin cent hook 19. he parts will then -be in the position shown in Fig. 4. Inthis position, it

will be noted,1 the parts ofthe claipfping device are positioned so as not to inte ere with the free insertion of a late or film between the members 1 and 2. o completel detach the members 1 and 2 from each ot er, the s ring plate 13 is swung outwardly so that e spring 15 is cleared from engagement with said plate, thus permitting the leaf 10 of entl loc the lever y 1p f ofy the shutter member '28.

still in engagement the link 2Oy out of the a jashutter member 27 the hinge to be slid yout of engagement with the gui es 11 of the (plate 12,

The following is a descriptionof the shutter mechanism employed torsecure the prints or sensitized paper imposition ,inthe opening 3 Vo'r the frame member 2,.

VThe shuttel`l comprises two members 27 and 28 hinge toeach other, the member 27 being hinged the openin ,3 therein. Means.l are provided for norma 'after described .being lprovided for independutter memberin the ng veach s ition shown in solid-lines in Fig. 8.

closed po Secure cal arms" 30 of which are pivoted by a rod 31, horizontally disposed, the two vertical arms or flanges 32 respectively o a U shaped plate 33 the horizontal portion of which is' secured to the outer side of theshuttermeinber 27.V l'flie, flanges 32 are ivoted'by a horizontal rod 34 to corres on ng flanges providedvertically on a U s aped plate 35 t e horizontal ortion of which is secured to the. outer side A coiled spring 36 encircles the rod 31 andhas one end se-` cured to'the' plate 29, the other end being sen cured to the plate 33. The tension of the spring. 36 is such 'as will cause it to exert a pressure tending to swing the shutter memer 27 tof the open position.

A coiled spring 37 encircles the rod 34 and has one end secured to the' plate 33, the other end being secured to the plate 35. The tension of the spring37 is such that it will exert a pressure tendingto 'force the shutter" mem- Vber 28 to the openposition. The spring 36 is weaker than the spring 37', so that when the shutter is moved to tlie closed position, the member 27 will always be swundrst to the closed position so asto clamp t e sensitive sheet `for making the print in its position.

To independently lock the member 27 in 'the closed position irrespective of the position of the member 28 an inwardly and outwardly slidable spring plate 38 is mounted inner side of the'plate 29 and side-of a horizontal plate 39 secured to the 'outer side ofthe member 2. The spring plate 38 is slidable to and from the position shown in Fig. 17, in which position it is disposed at the outer side of and securely holds the in the closed position. By withdrawing the spring plate 38 to the position shown in Fig. 8, the shutter member may be swung automatically to the open position shown in dotted lines in Fig. 8.

For lock ing the shutter member 28 in the closed position, the following described mechanismis preferably employed.

. Referring to Figs. 7, 8 and 23, 4() denotes to the member. 21.4at one side ofy forcing the shutter members .both .to the open position., shown in dotted lines in Fig. 8,' suitablelocking lmeans hereinto the outer cru-nder side ofthe member 2 is a U shaped plate 29 to the verti' ioo ice

a fiat spring secured at one end to the under or outer side of the shutter member 28. The spring 40 has a vertical portion provided with a hole or recess 41 adapted, when the shutter is swung to the closed position to receive and loclcingly engage a roller 42 rotativcly mounted on the inner side of the vertical portion of a spring 43 whicli is secured to the member 2. The tensionyoi' `the springs 4U and 43 is such that the roller 42 will automatically enter the hole or recess 41 when the shutter 1s moved to the closed position.

By moving the spring 43 to the position Ashown in dotted lines in Fig. 8,'the roller 42 will be released from the spring 40 after which the springs 36 and 37 will cause the shuttermembers 27 `and 28 to swing to the open position shown in dotted lines in Fig. 8. A roller 42 is preferably employedfor the reason that it will readily engage and disengage with the spring 40.

For securing the transparent glass plate 26 in-position `on the inner side of the frame member 1, four vertical plates 44 are pivoted respectively on four horizontal screws 45 secured respectively in the four vertical outer ed es of the member 1.

ach plate 44 is Vprovided with aninwardly horizontally turned lip 46 adapted to rest upon the top of the glass plate 26 to secure the same in position. The plates 44 are respectively forced to the position shown in Fig. 20 by four springs 47 each mounted on a screw 45 and having one end secured to the member 1 and theother end secured to the adjacent plate 44. The tension ofthe springs 47 is such that the plates 44 will be swung to the position shown in dotted linesin Fig. 20, when the plate 26 is absent, the lips 46 entering` recesses 48 provided therefor inthe upper side ofi the member 1, as shown inFigs. 19 and 20.

Two st les of masks are provided for coveringsuc portions of the negative as it is desired not to print. l

Four horizontal plates 49 are .slidable toward and romthe opening 3 ofthe member 2 in four grooves 49' provided res ectively in the four vertical outered es of t e member 2 adjacent .the upper si e of saidmember. To some of the plates 49 arev pivoted horizontal flatI masks 50 which may be swung' in a horizontal plane to suitable positions relative to the picture on the negative. Other of the plates 49 have each securedto it a flat spring plate 51 adapted to clamp to the plate a detachable mask 521 shown 1n Figs. 9, 14 and 15.

The sides of the masks 50 and 52 next the shutter members 27 and 28.' are preferably provided with longitudinal parallel lines 53 adapted to register with the adjacent side of the opening 3 ofthe member 2. lAdjacent to these lines are indicating characters, preferably numerals for guiding the operator .in adjusting the masks inwardly and outwardly.

In Figs. 8 24 and 25 is shown an improved form of' rolllilmholdercom risin two arcuate members 54 and 55 whici are inged by a longitudinal pintle 56 to cach other, the member 54 having at one edge a laterally turned longitudinal lip 57 adapted to snugly lit in a recess provided between the member 1 and a plate 58 secured thereto. A. spring 59 has one end secured to the outer side of one member and the other end secured to the other mem; ber. The tension of said spring is such that the member will, normally be swung to the closed position shown in Fig. 8. In this position a longitudinal s ace will be provided between the two members through which the film 4 may pass. When it is desired to place an uncut film or roll in the roll holder, the plate or member 55 is swung to the osition shown in dotted lines in lig. 8, t e film placed therein, after which the spring 59 will force the member 55 to the closed position in which lit will lie in the' same circle as the member 54.

In operating my invention the levers 21 and the lever v15 are swung to positions in which 4the frame members 1 and 2 will be forced apart. The film or negative plate is then inserted between the members and adjusted laterally and endwise to the position desired. The shutter members 27 and 28 are moved to the open position'so that the operator may look through the negative sofas to obtain the ad 'ustment withexactness. When the film or plate is properly positioned, the levers 21 and 15 are swung so as to move the members toward each other so as to tightly clamp the negative in position.

The negative'is positioned with regard to the tact that the prints should always be placed in the frame with one end and one side edge always a ain/st one end and side of the opening 3 in t e member 2.

The negative having been ositicned and clamped, the sensitive sheets rom which the duplicates are made are successivel inserted in the opening 3 of the member, 2, t 1e shutter closed and locked and the print then made in the usual mannen, i

When it 'is desired to inspect the print without removal from the frame, the late 38 is moved to the positionshown in ig. 17 thus holdin the member 27 in the close position. he shutter member 28 is then swung to the open positionwhich permits the print to be ins ected.

By providing tile members 1 and 2 with the diagonally opposite projections 5 and 6 and 7 and 8 and mounting the clamping devices thereon, a wide range of adjustment laterally is provided for uncut films, which may be disposed'at an angle to the printing frame as shpwn in Fig. 7. By disposing the las eugeee clamping devices which connect. the members 1'. and 2 adjacent to the corners, much wider range of adjustment may De given the film th is ossible with the clamping ,def

' vices ot erwise disposed.

' Otherwise the modified form. corresponds in construdtion with the other form o my in# vention, excepting that in the modified form different means are employed to keep then members 1 and 2 in register at'the o Venings 3. Inthe modified form shown in iigs. 24 and 25, vertical guides comprising plates 60 are pivoted to the four outer edges of theV member 1. These plates are adapted to engage the adjacent edges of the member 1 when the members are attached to each other. 4The plates 60 may be swung to horizontal positlons, shown in dotted lines in lig. 26 to permit'the insertion of a plateor m. V

In .the other form of my invention a vertical Uv shaped plate 61 is secured at its lower end to the projection 6 of member 1 and is ada ted-toV enter grooves 62 provided inthe Vprogection 8of the member 1. .The plate 61. `serves te keepl theV openings 3 of Y members 1 v and 2 in alinement-f f other with a ent, isc- Havingthus described my inventiomwhat I cla-imand desire tosecure by .Letters Pat 1. In a, printing frame, the combination with front and back frame members, of releasable securing means for detachably con-` necting said frame members, said securing means having means by Whichsaid members may be forced toward or from each other.

2. Ina printing frame, thecombination withfront andback frame members, of ref leasable means for. detachablj connect' said frame members ur'tge othelgsa securing 'means byrwhichthe frame mmbersma'y e forced toward each' ielding pressure or forced other without disconnecapart from eac tion.

. 3. In a printin frame', the combination with front and ack frame members of means for detachably securing said mem ers together, `said securin means having means for forcing .said memers either toward or from eachv other, and guiding means vby which said members are retained in proper register with each other.

4. In a printing frame, the combination with front and back frame members, of pivotal means for hingng said members together, and locking means for forcing said members either toward or trom eachother,I saidpivotal means also having h3*V member,

in one: direction, and

'spring upon the Aother ,opposite direction.

which the members may be forced .toward and from each other.

5'. In a print' frame, the combination with front and 4ack frame members, of yielding pivotaljmeans for sai members together, saidpivotal means having means-for-forcf `said embers toward each other-with ai ure and having means for forcing'` members apart from each other, and locking means having yielding means `for forcing said members to- Ward each other and provided with means lfor forcing said members apart.

6. In a printing frame, the combination with frontA and back frame members'movable toward and from each other, of pivotal means for detachably hmging said members together, said pivotal means having means for normally forcing each other with a yielding pressure, and provided also 'with means for forcing said members ailxilartr without disconnecting them.'v

7. ,a printing frame, the combination with front and back frame members, of pivotal means for det'achably hinging said members together, said 4pivotal means having means for normally forcing said members toward each other with a yielding pressure, and provided with means for forcing said members apart, and locking means for deachably connectingsaid members ,and having means for normally forcing said members toward each other with a yielding pressure and Vprovided also with means for forcing said members apart. 8. In` a with front land back frame members, of a hinge one'leaf of which is secured to one a member slidable on the 'other-leaf toward andfrom the pintle of the hinge, a spring' mounted upon the other frame member for reciprocating said slidable member on the hinge leaf upon-which it is mounted, the tension lofthe spring normall forc" it means for orcing said sprin in the opposite direction.

l. a printing frame, the1 combination with frontend back vframe members, of a hinge-having a leaf secred to one frame member, amember slidaie on the other leaf toward and from the p tlo of thehinge, a rame member for reciprocating said slidable member, the tension. of the spring normally forcing said slidable member in one direction, and a lever for moving said sprin in opposition to its tension to force said s 'dable member in the frame, the combination with front land bac frame members, of two clamping members, one of which is resilient, secured respectively to said members, a lever hin ed to one of sald clampin members, and a likmo'unted on said lever or engaging the 10. vIn a printin printing frame, the combination said members toward 60 silient clamping member will exert a pressure other clamping member and by which, when theV lever is swung in one direction, the front and back members are forced with a yielding pressure toward each other, and when the ever is swun in the opposite direction the front and bac members are forced apart.

11. In a printin frame, the combination with front and bac frame members, of two clamping members, one of which is resilient, secured respectively to said members, a lever hinged to one of said clamping members, and a link carried by said' lever and releasably engaging the other clamping me'mber by Whic when the lever is s'vvung in one direction, the front and back members will be forced in 'one direction and when the lever is swung in the other direction the front and back members will be forced apart.

12. In a printing frame, the combination WithV front and back lframe members, of two-clamping members secured respectively thereto, a lever pivoted to one of said clamping members, said clamping member having meansfor releasably holding said lever in the locked position, and a link carried by said lever and en aging 4the other clamping member and by w ich, when the'lever 1s swung to the locked position, the front and back mentbers will be forced toward eachother, and when the lever is swung in the opposite direction or to the unlocked position, the front and back members will be forced apart.

13. In a printin frame, the combination vrithfront-andbac frame members, of two clamping members, one of 1which is resilient, secured respectively thereto, a lever ivoted to one of said clamping members, an ya link carried by said lever and engaging the other clamping member by which, when the lever is swung. to and from the locked position, the frame members will be forced toward and from each other, the position of said link when thelever is in the locked position beimr disposed in aposition in which the tension 0I.

the resilient member vi ill tend to yretain said lever in the locked position.

14. In a printin frame, the combination with front and bac c frame members, of two clamping members, one of Which is resilient, secured respectively thereto, a lever pivoted to one of said clamping members and having means for being releasably retained thereby in the locked osition, and a link carried by said lever an normally releasably engaging,

the other clamping member, by which, when the lever is swung-to and from the locked position, the lframe members are res ectively moved toward and from each ot er, said link, whenLthe lever'is in the lockedposition, being disposed Vin a position such that the retending to retain said lever in the locked position.

l5. In a printing frame, the combination with front and back frame members, each substantially rectangular in shape, of a plurality of clamping means connected respectively to one ofi said members adjacent to diagonally opposite corners and connected respectively to corresponding corners of the other frame member.

16. In a printing frame, the combination with front and back frame members, each substantially rectangularuin sha e and provided veach with an opening t ierethrough across which a negative is adapted to extend, of guiding means connecting said frame members bywhich said openin are retained in register with each other, an a plurality of clamping means secured tes ectivel to one frame member adjacent to diagonaliy opposite `corners thereof and connected respec tively with the opposite frame member ad jacent to corresponding corners.

17. In a printing' frame, the combination with front and back frame members, each substantially rectangular in sha e and provided each With an opening t erethrough across which a negative is adapted to extend,

-substantially rectangular in shape, of a'plurality of clamping` means` connected respec` tively to one of said members adjacent to diagonally opposite corners and connected respectively lto the votherframe member at corresponding corners, each clamping means having means by which said framevmembers can be forced thereby toward and from each other.

19. In a printing` frame, the combination With-front and backiframe members, each substantially rectangular in shape, of a plurality of clamping means connected respectively to `one frame member adjacent to diagonally opposite corners and connected respectively to the otherirame member adjacent to corresponding corners, each clamping means having 'means by .which said frame members cangbe` forced toward` each other with a yielding pressure and provided also With means b which said members can be forced by said clamping members apart from each other.

20. In a printing frame, the combination with front and back frame members, each substantially rectangular in shape, of pivotal means for hinging together said two members, said hinging means being located adjaf z so 'ci sith alframe, of -alshuttc cent to correspondin corners of opposite members, and release le means for logking said members together, said locking means eing disposedadjacent to corners diagonall;

opposite to the corners adjacent to whic said means is secured 21. In a printing frame,the combination with front ,and back frame members, eachsubstantially rect-angular in shape and prof with 'diagonally extending projections, .and two sets ofclamping means .respectively con# nectin-g. corresponding projections of opposite members.

2 2. In a printing frame, the combination with front and back frame members each substantially rectangular in shape, and provided -at diagonally opposite `corners with v diagonallyextending projections, of hinging 2i)V means pivotally connecting .corresponding projections of opposite members, and lockmg means for connecting the other two projections. 23. In a printing frame, the combination with front and back frame members each substantially rectangular in shape and provided each `at diagigonally` opposite 'corners with diagonally extendingV projections, of hinging means pivotally connecting corre'- sponding projections of opposite members, said hinging means vhaving means by which saidmembers are moved toward each other, and locking means connecting the other two projections and having means by which the ral meinbers can be moved therebutoward and 'from each other.

2'4. a printing frame, the combination with a frame ofV a shutter lcomprising two members, said members being hinged to each other and one member hinged to the frame., i and two springs'fornindependently forcing said members respectively to. swing -to the open position, the spring which actuates the member which is hinged to the frame being the weaker of the tWo springs.

25. In a .printing frame, the combination with a frame, of a shutter comprising two members hinged to each other, one member being hinged to the frame, means for nor-` mally forcing the member which is hinged to the frame to the open position, and releasable m'eans independent lof the other ymenrber for locking in the closed osition the member which is hinged to the fliarne., t5 26. ln a printing frame, the combination vwith a frame, of a shutter comprising two members hinged to each other, one member being hinged to the frame, means for normally forcing tothe open position the member hinged to the frame, and separate means operative independently of each other `for respectively locking both members in the closedlptpsition. L

27. a printing framgtheeeombination "r'nprising two tothe fra videdV earch "at, diagonally opposite corners.

and from p Ymembers hinged to each other, one member being hingedto the frame, two springs for inde endently forcing said members respective y to. swing to the open position, the spring actu ting the member which is hinged e being the weaker of the two springs, releasable means Jfor locking in the closed position the member hinged to the frame i'rfdeqpndently of the position of the other mem erfand releasa le means for locking said other Amember inthe closed position.

a printing frame, the combination with frame having an opening theretbrou of a shutter for closing said opening and comprising two members hinged to each other/g` one member being hinged to the frame, releasable means for locking said members in the closed position, and means by which, when said lmembers are released from said locking means, they will both be swung through an are of at least ninety degrees. 29. In a printing frame,- the combination with a frame, of a shutter hinged thereto, two springs mounted vrespectively on said shutter and frame, "one spring having a recess, and `a roller mounted on the other spring and adapted to enter said recess for lockinglsaid members together, one spring exerting a pressure on the shutter, when in the locked position, for retaining the shutter in the closed position, the tension of the other spring normally forcing it'into a position in which the roller will enter said recess when the shutter is swung to the closed position. 30. In a printing irame, the combination with a frame having an opening therethrough adapted to receive sensitized printing paper, of a mask for closing more or less of said opening, and a supportslidable on the frame and'upon which said mask is pivoted so as to swing laterally. 31. In a printing frame, the combination With a frame having an opening for receivin pa er to be printed, of a mask pivotally an sli ably movable to different positions transversel)r across said opening and having a plurality of indicating devices for registering with one side of said opening.

32. in a printing frame, the combination with a frame having an opening therethrough adapted to receive the paper to be printed, of a. mask pivotally and slidably movable transversely to different positions across said ov ening and provided on one side with a V-p urality of parallel lines ada ted each to register with one side of sai opening for indicating the diierent positions to which the mask may be adjusted. i

33. In a printing frame, the combination with a frame having an opening therethrough, of a mask pivotally and slidably movable to different positions vtransversely across said openingand provided on one side with also B eri/,eee

plurality ol' perellel lines adapted euch to ing the sinne.

54. ln e, printing freine, the combination with :i l'rzmie hevirag en opening therethrough, ol' n. infiel( support slideble on seid freine and lnovided with Ineens for deteehe bly holding e. nmsli, :md e mesi; pivrfted so to swing laterally on seid support.

35. lli it printing ironie, n. plete clamping member iii-voted Le one edge of the freine end provided with :nl inwardly turned lip for en.- geging the top of e plete placed on the frame, end n. spring for normally forcing seid lip in position to clernp the plete.

236. ln n, printing freine, the combination with e. freine adapted to support e plete and provided with e recess in the side which supports the plete, of e. clamping member piveted to one edge oi' said freine and provided with en inwardly turned lip which, n hen the plete is mounted on the frame, rests upon seid plete, and it hen the plete is absent rests in seid recess with its upper side below the surface of the side of the frame which supports the plete, and a sprinv for forcing sind member to a. position 1n Iliiehthe lip will engage the plate or enter the recess when the plete is absent.

37. ln e printing freine, the zonibinetion with n tranne, ol n hlm holder comprising two erci'iete nieinbers hirged to erich other for receiving :i film roll, Ineens for seeming one 3g,

ol"l srrid members to the freine, :and spring for forcing the other niemlmr to u position in cshih beth nn-rnihers will eoperete in forming :i aidilnlriefil tube having e longitudinal slot lor receiving 'the film. 4g

3&5. In e, printing freine, the combination 'with zi. freine, provided with e. reifess, of u cylindrical minder .film holder .'finnprising two inmate members hinged togeijlwr for receiving e i'ilrn roll, one nien'iber having e. 4.5

lip lor being deteelmbly secured in the seid recess, the pintle eonneeting seid members boing disposed longitudinally of the holder, and e spring for normally retaining seid members .in eylindrieitl form, that is, the ,e

closed position, a longitudine] opening being provided between seid members' when they are in the olosed posit-ion for receiving the film.

In testimony Whereofl have signed' my neme to this specification in presence of twe subscribing witnesses GYRUS E. WELTMER, l'vitnesses:

E. B. HOUSE, WARREN D. HOUSE. 

